The outbreak of any war is invariably the result of multiple factors intertwining. It is never sudden; rather, it accumulates various triggers until a final spark ignites it completely.
What that spark actually is, even the parties directly involved can rarely predict. After all, the world holds far too many unexpected variables.
Take the present situation: neither Hogwarts nor the Mawu Alliance anticipated that a bombing run carried out largely to vent frustration would escalate into the final, all-out war.
Chapter 376